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v' '`' ``� � 1800 W Ashton Blvd. <br /> :� � 'i Lehi, UT 84.043 <br /> Structural Group <br /> J.Matthew Walsh,PE Kirk M. Nelson, SE Samuel Brown,PE-Civil <br /> DiredcrofEngfneerfng .Structural Engineering Structural Engineefing <br /> james.waish@vivintsolar.com kirk.nelson@vivintsolar.com sam.brown@_vivintsolar com <br /> Mount Spacing Calculation <br /> ASCE 7-10 Simplified Procedure for Components and Cladding <br /> NDS Section 12 <br /> I <br /> ICC Code Cycle 2015 <br /> Wind speed (V) 145 mph <br /> Exposure Category D <br /> Roof Slope (0) 27.0 deg <br /> Effective Wind Area 20 sf <br /> Least Horizontal Dimension 0.00 ft <br /> Adjustment Factor 1.47 <br /> Topographic (Kt ) 1 <br /> Panel Dead Load (Pd) 3 psf <br /> Ground Snow Load 0 psf <br /> Flat Roof Snow Load (pf) 0 psf ASCE 7-10 Eq. 7.3-1 <br /> Slope Factor(CS) 0.72 ! ASCE 7-10 Fig. 7-2b <br /> Roof Snow Load 0 psf PfCs <br /> Total Dead Load (D) 3 psf ! Panel Dead Load + Roof Snow Load <br /> I <br /> Portrait Landscape <br /> Vertical Spacing (L) 67 in I 391in I Based on length of the panel <br /> Wind Pressure Zone 1 Zon;e 2 Zone 3 <br /> Lookup Pressure (Pnet30) 31 psf 49 psf 89 psf ASCE 7-10 Fig. 30.5-1 <br /> Uplift Pressure W 46 psf 72 sf 131 psf \*Kzt*Pnet30 <br /> i <br /> I <br /> Fastener Type 5/16 in Yield Equations NDS Table 12.3.1A <br /> Diameter 5/16 in I m ; 648 Ibs <br /> Fasteners 1 I s 1222lbs <br /> Embedment (Dpen) 2 1/2 in II 359 Ibs <br /> Load Duration (Cd) 1.6 III_m 372 Ibs <br /> Pullout per Inch (W) 235 lb/in III s ! 389 Ibs <br /> IV j 1 336lbs <br /> Uplift Capacity 939 Ibs DpenCdW <br /> Shear Capacity 336 Ibs Based on equations from NDS 12.3.1A <br /> Page 3 of 4 <br />